56 lines
1.0 KiB
C++
56 lines
1.0 KiB
C++
#include <kernel/Debug.h>
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#include <kernel/Process.h>
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#include <kernel/Syscall.h>
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namespace Kernel
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{
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void sys_exit()
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{
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Process::current().exit();
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}
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int sys_read(int fd, void* buffer, size_t size)
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{
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auto res = Process::current().read(fd, buffer, size);
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if (res.is_error())
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return res.error().get_error_code();
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return 0;
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}
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int sys_write(int fd, const void* buffer, size_t size)
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{
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auto res = Process::current().write(fd, buffer, size);
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if (res.is_error())
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return res.error().get_error_code();
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return 0;
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}
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extern "C" int cpp_syscall_handler(int syscall, void* arg1, void* arg2, void* arg3)
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{
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(void)arg1;
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(void)arg2;
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(void)arg3;
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int ret = 0;
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switch (syscall)
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{
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case SYS_EXIT:
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sys_exit();
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break;
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case SYS_READ:
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ret = sys_read((int)(uintptr_t)arg1, arg2, (size_t)(uintptr_t)arg3);
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break;
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case SYS_WRITE:
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ret = sys_write((int)(uintptr_t)arg1, arg2, (size_t)(uintptr_t)arg3);
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break;
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default:
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ret = -1;
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dprintln("Unknown syscall");
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break;
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}
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return ret;
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}
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} |